<template>
    <div class="app-container">
        <mt-header fixed title="自己动手做的项目">
             <span slot="left" @click="goBack" v-show="flag">
        <mt-button icon="back">返回</mt-button>
      </span>
        </mt-header>
        <transition>
        <router-view></router-view>
        </transition>
        <nav class="mui-bar mui-bar-tab">
            <router-link class="mui-tab-item-llb" to="/home">
                <span class="mui-icon mui-icon-home"></span>
                <span class="mui-tab-label">首页</span>
            </router-link>
            <router-link class="mui-tab-item-llb" to="/member">
                <span class="mui-icon mui-icon-contact"></span>
                <span class="mui-tab-label">会员</span>
            </router-link>
            <router-link class="mui-tab-item-llb" to="/shopcar">
                <span class="mui-icon mui-icon-extra mui-icon-extra-cart"><span id="badge" class="mui-badge">{{$store.getters.getAllCount}}</span></span>
                <span class="mui-tab-label">购物车</span>
            </router-link>
            <router-link class="mui-tab-item-llb" to="/search">
                <span class="mui-icon mui-icon-search"></span>
                <span class="mui-tab-label">搜索</span>
            </router-link>
        </nav>
    </div>
</template>
<script>
    export default {
        data() {
            return {
                flag: false
            };
        },
        created() {
            this.flag = this.$route.path === "/home" ? false : true;
        },
        methods: {
            goBack() {
                // 点击后退
                this.$router.go(-1);
            }
        },
        watch: {
            "$route.path": function(newVal) {
                if (newVal === "/home") {
                    this.flag = false;
                } else {
                    this.flag = true;
                }
            }
        }
    };
</script>

<style scoped>
.app-container{
    padding-top:40px;
    padding-bottom:60px;
    overflow-x: hidden;
}
.v-enter{
    opacity:0;
    transform:translateX(100%);
}
.v-leave-to{
    opacity:0;
    transform:translateX(-100%);
    position:absolute;
}
.v-enter-active,
.v-leave-active {
  transition: all 0.5s ease;
}
/*该类名，解决 tabbar 点击无法切换的问题*/
   .mui-bar-tab .mui-tab-item-llb.mui-active {
       color: #007aff;
   }

.mui-bar-tab .mui-tab-item-llb {
    display: table-cell;
    overflow: hidden;
    width: 1%;
    height: 50px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #929292;
}

.mui-bar-tab .mui-tab-item-llb .mui-icon {
    top: 3px;
    width: 24px;
    height: 24px;
    padding-top: 0;
    padding-bottom: 0;
}

.mui-bar-tab .mui-tab-item-llb .mui-icon~.mui-tab-label {
    font-size: 11px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
}
</style>